.\" zip_set_archive_comment.mdoc -- set zip archive comment
.\" Copyright (C) 2006-2016 Dieter Baron and Thomas Klausner
.\"
.\" This file is part of libzip, a library to manipulate ZIP archives.
.\" The authors can be contacted at <libzip@nih.at>
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.Dd July 22, 2012
.Dt ZIP_SET_ARCHIVE_COMMENT 3
.Os
.Sh NAME
.Nm zip_set_archive_comment
.Nd set zip archive comment
.Sh LIBRARY
libzip (-lzip)
.Sh SYNOPSIS
.In zip.h
.Ft int
.Fn zip_set_archive_comment "zip_t *archive" "const char *comment" "zip_uint16_t len"
.Sh DESCRIPTION
The
.Fn zip_set_archive_comment
function sets the comment for the entire zip archive.
If
.Ar comment
is
.Dv NULL
and
.Ar len
is 0, the archive comment will be removed.
.Ar comment
must be encoded in ASCII or UTF-8.
.Sh RETURN VALUES
Upon successful completion 0 is returned.
Otherwise, \-1 is returned and the error information in
.Ar archive
is set to indicate the error.
.Sh ERRORS
.Fn zip_set_archive_comment
fails if:
.Bl -tag -width Er
.It Bq Er ZIP_ER_INVAL
.Ar len
is less than 0 or longer than the maximum comment length in a zip file
(65535), or
.Ar comment
is not a valid UTF-8 encoded string.
.It Bq Er ZIP_ER_MEMORY
Required memory could not be allocated.
.El
.Sh SEE ALSO
.Xr libzip 3 ,
.Xr zip_get_archive_comment 3 ,
.Xr zip_get_file_comment 3 ,
.Xr zip_set_file_comment 3
.Sh AUTHORS
.An -nosplit
.An Dieter Baron Aq Mt dillo@nih.at
and
.An Thomas Klausner Aq Mt tk@giga.or.at